Updated release notes

ci/release_notes.md

@@ -4,9 +4,15 @@
 	is due to support for instance-group level properties being dropped by new
 	versions of BOSH.
 
+# Update to Genesis v2.7.0
+
+* In order to use the alternate secrets mounts provided by Genesis v2.7.0, the
+  kit has been updated to comply with its requirements.  You will need to use
+  Genesis v2.7.0 or later to use this kit version.
+
 # Updates
 
 * Bumped version of Vault to 1.4.0
 * Added `params.vault_domain` to allow setting the DNS SAN for the vault certs.
 * Certificates for Vault are now generted by genesis for a TTL of 2y to satisfy new browser certificate constraints
-	* You may need to run `genesis add-secrets` when upgrading to this version of the kit.
+	* You may need to run `genesis add-secrets` when upgrading to this version of the kit.